Beryllium element has 4 protons in its nucleus, and 4 electrons circling around.
Beryllium is an alkali metal, melting point 2349 ̊C. It is easy to lose 2 electrons and becomes Beryllium ion Be2+.
Beryllium compounds are widely exists.
• Beryllium Hydroxide, Be(OH)2
• Beryllium Oxide, BeO
• Beryllium Peroxide, BeO2
• Beryllium Hydrogen Carbonate, Be(HCO3)2
• Beryllium Periodate, Be(IO4)2
• Beryllium Sulfite Tetrahydrate, BeSO3.4H2O
• Beryllium Bromide, BeBr2
• Beryllium Chloride, BeCl2
• Beryllium Nitrite, Be(NO2)2
• Beryllium Phosphate, Be3(PO4)2
• Beryllium Dichromate, BeCr2O7